Hydraulic fuel-dispensing system



HURLBRINKST AL 1,757,715

' HYDRSULIC FUEL DISPENSING SYSTEM .Filed Dec. 1, 1928 6 Sheets-Sheet 1 I fuel wig May 6,1930;

HYDRAULIC FUEL DISPENSING SYSTEM Filed Dec. 1928 6 Sheets-Sheet 2 9 I llll E E 13 a," 1? 22C} *llllllil) Ill! HH 2 In; d

@ififiyy E. HURLBRIINK ET AL I '7 1,757,715 7 May 611930.

E. HURLB RINK ET AL HYDRAULIC FUEL DISPENSING SYSTEM Filed D ec, 1, 1928 e sheets-sheaf 3 Jzavezziars 2- v M/rm 9 k V1 Q m QR .N.

May 6, 1930. E. HURLBRINK ET AL 1,757,715

HYDRAULIC. FUEL DISPENSING SYSTEM I 6 Sheets-Sheet 4 Filed Deb. 1, 1928 III] l Q 1930. E. HURLBRINKETAI; 1,757,715

' HYDRAULIC FUEL DISPENSING 'ISYSTEM Fild Dec. ,1, 1928 6 Sheets-Sheet 5 mu w 1 h \Il// v a May 6 1930. E. HURLBRINK'I [AL 1,757,715 7 HYDRAULIC FUEL DISPENSING SYSTEM Filed 090,1, 1928 s Sheets-Sheet 6 7 Jiwezzzanf Patented May '6, 1930 "UNiTED: STATES ERNST'HURLBRINK, onBnnLm; nn A unwrabn rannnnomv, eaamngas- I SIGNORS TO THE FIRM MARTINI; '& Himn E MASGHINENBAU-AKTIENGESELL SGHAFT, or BERLIN, GERMANY nrnnaunro ronL-msrnlvsrne s Ys'rnnr 'npplication filed-December 1, 1928 Serial No 323,0 53fand in Germany Deeember l, 1927; i

Our invention relates to fuel-tapping plants in which the fuel-is expelled from an underground storage tank by hydraulic means. p

In such installations there are known methods of automatically shutting 'otl the hydraulic main, when the tapping cock is closed,-by means of acontrolling device into the storage tank into communication with the atmosphere. For this purpose in the known devices, the tapping cockv is directly coupled to the controlling-device; i F

'Ac'cording to our present invention the dependence of the controlling 'device upon the tapping cockiis attained by a special construction of the former, which renders a direct positive connection with the tapping cock-unnecessary, so that the removal of the tapping point from the controlling device to be lodged in the immediateneighbourhood of the entrance of the hydraulic main into the storage tank makes no material difference.

Further improvements relate to the speclal embodiment of the inventive idea hereine before defined in general and also to the combination of the, said inventive ideawitha the present invention areillustrated by: way

of examples in the accompanying drawings in which I Figure 1 is a diagrammatic generalview or" aninst'allation equipped with an improved controlling apparatus. F

Figure 2 is a s1 tronmg apparatus by Itself :ma dlfferente the chambers 1, 2 and ,3, is Provided a diaoperative position, while, 7 l I Figure 3 shows in sectional elevat1on on a larger scalethe detailed construction of the 7 paratus de'notedas a whole-by G.

rollers g ping cock B.

milar view of the iconof the installation including means :fo'r'safe- I tapping I cook B. Into the ascendingpipe a there opens a pipe bser vi'ngfor filling the storage tank with petrol. Into "the tank A is furthermore introduced a pipe'c forsup! ply ng water under pressure, and between the-latter and a'pressure-water-fee'd pipe cl is introduced the automatic controlling ap- The controlling-apparatus Gf shown' Figs. 1E3 consists of two main parts, namely V l the actual automatically 7 operating controlling dev1ce C and acontrol valve C500- operating therewith, to'be actuated by hand.

eifected by means of a cable'k, passing'over into the neighbourhood of the tap- The controlling appliance 0 forms a, casing comprisingthree main chambers 1, 2 and 3 --witlr apipe union-member 5 for the-pres- The operating of this valve is preferably 7 sure-waterpipe 0 leading to the storage tank,

a pipe union member 6 for the water-discharge and a pipe union member 7 for a pipe 8 permanently connecting the feed pipe d with the valveC From the valve 0 apipe 9 leads to theatmosphere, and another pip'e 10 to an automatically controlled inlet valve 7 11 opening 'intothe ,chamberQ; Beside the latter is mounted a second automatically controlled pressure-water inlet valve 12,-theconnecting 'pipe 13 of which is in permanent communication with the feed pipe or hy-- draulic main 0?. a

In theinte'rior'of the casing, containing ber 16, formed 'bythe saidrim 15 and the wall of the casing 1, into {communication with the atmosphere; The diaphragm is connected by'a screwQO- with a piston l7,'which has apertures -18 andv co-operates with a spring 19,;which' p res sesiit inwards; The' screw/20 connecting the diaphragm with the piston is" provided with a bore 21, in which is supported a displaceable spindle'22, which is subject to the influence of a spring 23, and

' carries at its upper end acollar 24 and at its lower-Lendacollar 25. p I

According to Eigl3 the. spring 23,.holds the spindle 22 with its collar in contact with the lower facing of the screw 20. I V

"sage apertures 29 in an intermediate bottom 28 by pressing a packing disc'againsta packing rim 31.; In the lowercasingchamher 3 'is provided, above a passage aperture 32,;form-ingamediumof comin'unicationwith thefeed watersupply pipe (5, another valve cone, 33,- :which isvertically-adj ustable, and which,by: -the rotation of-its rectangular; eX-.

20 tremity31:, enables-its spindle-: to 1 adjust as a required the vcross-sectional area of a the l g -p'assages' forithefw'ater under pressure passing outof the EPIGSSUIB Water piped and the'nozzle or;pipe*uni;on-A into the-chamber 3. 1

r a 25 y f lni thegpos ition of;rest,sl1own inpFigure 2, thepistond'i: isv'pushediupward under the a'c-,

.tioneof thegspring 19" so far that its marginal apertures 18 protrude-beyondthe-rim 15,-and at the} salne tiine the; valve cone 2? closes the aopack-ingqrim 31; :Eurthermorein:theposi- I tim r rest thespind le 22, with its collar 24;, iisjpressed by the spring 23 .againstfthezwater inlet valve -12,;so.thatthe'latter cannot admit ainy'. water. 1 Consequently-, the pressure water; pipe-,0 leading; to the storage-tank and connected. with thepipe union 5 communicates through the holes 18 with th'ewater dischnrge n Z ZIe-GLG It'istherefore without pres- Isure; -;The; pressure water, which; [tends to penetrate out of the'pipe d through thenozzle,

fl -remains inoperative, since the valve cone L27 closes the :passageaperturesl29, and because also 'the control valve (his I still closed. iThe water inl et valveill; in the-upper part a of the I controlling, appliance is I however opened, =since an upwardly projecting rim 36515 thediaphragm screw-20Ihas raised the eightIleVer-B'Zleffecting,theopeningof the .valve 211,; as shown in- Figure' I a I N w-when tap-p ng 1s to take plaeeit lsonly necessary, after opening thetappmg cook 13,

,for the control- .valve-. C to---be-raised -.a short time so that water under vpressure from the i piped can enter the :upper casing chamber 2 through-the pipeunion 7 the pipe 8, the coni trol valvevGy-and the valve 11. The water underthe diaphragm l cann'ow be displaced withqcompression of the spring 19' without appreciable resistance, partly from theinozzle l .5-into'thestoragetank, and partly through the waterdischarge nozzle 6".into the open 1 ,Evenfduringthe first part of thedownward movement of'the piston 17 its apertures 18 are coveredxby the ri1n l 5.and at the same time the valve; cone 27 is opened, which 'now' at iuntil thepiston bearswith a projection ;on its 1 water from the pipe-(Z through 13 to the chamofpressure at the throttling point 32, 33 will whe'reby'thehydraulicisupply pipe 0 of the mits water under pressure through the apertures 29 into the chamber 1. The water passes through the pipe (Z into the storage justing the valve cone 33. By the fall of 7 pressure the quantity of pressure water is The-pis'ton- 17 -isconnected by a spindle 26-; 10 with -another valvecone 27, which is pushed-' upwards by the piston, thereby closing pasdetermined, andtherefore-thequantity" of" work to be'done in delivery, so that the latter 7 admits of -being-regulated by adjusting the valve cone 33. r I

7 By the press'urewater flowing in out of the opened control valve C the spring 19 is compressed, witli'deflection of the diaphragm 14,

spindle 26 againstfthe bottom28, whereby the normal tapping position is -obtained,-as shown in Figure 1.' Y I 7 I ofthe, collarl25 with --Meanwh'leby contact W $5 the threaded shank of the screw 20, the spin dle' 22, with'thec'ollar 241, is-drawn so far downwards that the water inlet valve isnow released,and thereforethe supply of pressure her 2 is also maintained, whenztheacontrol valve C 1s releasedagam and closes,-'its connecting pipe 10 being in communicationewith 1 the water discharg e noz zle9. Nevertheless the pressure water does not: pass out-of the 9 5 ,chamber'2 through'thevalve llibecause-sthis valve has meanwhile been closed by the weight "lever 37, Whi chl1as .been released from the 1 rim 7 36" ofthe screw T 20.; Hence a the pressure water passes through" the pipe d, .the throttl1'ng-point32,-33, thebores -29,=and the-pipe c T into the storage tank; and displaces the 'petrol contained therein Bvisheld open; I I, I a When the tapping cock Bis closed; the fall;

as long as the tapping cock disappear in consequence of the cessation of the flow, and the: pressureprevalling in the hydraulic pipe d wil'l also recur-in its full magnitude in the chamber 1. This pressure, in conjunction with the-pressure of the-spring 19 acting in the same direction, now acquires predominance overthespecifically equal pres sure in theupper chamber 2, andfdisplaces the diaphragm back again in-an upward directi'on, thevalve'l2 being first closed again and the valve 11 being opened again by the raising of the weight lever 37l Consequently a. relaxation of pressure now occurs in the chamber12, since 'the-water can escape: therefrom C; into the water discharge nozzle "9.

The consequence of this is thatthe spring 19 drives the piston 17 still higl1er,=untilat least thebore's 18 areraisedtabove theirim 15,

storage tank is broughtinto communication with the water dischargeconnection 6', which results in a complete relaxationotpressureI Y Atevery fresh tapping,the seriesof oper- 3 129 through the valve l'l and the-controlvalve ations described is repeatedin the same manner.

It should be observed that any'water leaking through when the valve cone 27 is closed, owing to the latter not being water-tight, passes to the discharge connection without having any effect. while any leakage occurring owing to the automatically closing valve .12 not being water tight, passes through the valve casing G which is provided in a pipe al communicatingwith the pipe union member 4: of the lower part of the casing (Figs. 4 to 6). From the valve casing C the pipe l3 corresponding with the pipe 13 according to V Fig. 3 leads to the additional inlet valve 12 'j acent to said wall.

. duct 13. duct communicates which is controlled by the which is provided in a wall 51 of the casing of the apparatus. A fourth chamber 2 is ad- The valve 12 is governed by a spindle 22 which is guided in the bore of a screw 20 connecting the diaphragm 1a"? with the piston 17 and which is influenced by the pressure of the spring 2 9.

In the wall 51 also the inlet and outlet valve 11 is providedfronh which an actuate ing pin 69 extends upwardly through the valve opening 10 into the chamber 2 The said valve controls the communication between the chambers 2 and 2".

A branch duct 8 provided in the wall 51 also communicates with the chamber 2*. The said duct proceeds from a bore 18 of the wall 51, the said bore forming an extension of the With the said bore also the branch valve 12. V

52 is a valve which corresponds with the controlling valve C of the apparatus de scribed before. The spindle or stem of the said valve 52 is guided in a projection 54 of the upper wall 53 of the casing, and the said valve is pressed upon its seat by a spring 55.

The valve 52 is actuated through the intermediary of a lever 57 which is mounted at 56 in the chamber 2". The said lever isad-j acent 'to a collar 59 of the valve spindle and may be moved upwardly against the tension of the spring 55, whereby the valve 52 is opened to "connect the pipe d for the pressure-water with thechamber 2 through the intermediary of The driver 58forrns the guide ofthe wateroutlet'valve 72 the seat 7 8 of which is proend the spindle 61 is guidedwith a headchannel 9of upper wall of the casing.

piece 62 in a projection of the casing. A spring 63 tends to move the valve 72 into its closed position. When the valve 72 is open, thegap 60.c onnects the chamber 2 with a The said channel 9 corresponds withfthe dis-' charge-nozzle 9 of the apparatus described above and discharges into the free atmosphere.

In contact with an extension 64 of the guide 62 is a roller 65 which is fixed on a lever 66 mounted at 74 on the casingof the apparatus. On this lever a threaded piece 67 is adjustably fixed which normally presses the spindle 61 and the driver 57 downward-- ly to keep the valve 72 open. A cableh acts on the free end of the lever 76 throughthe ber.

.by'the Weighed lever 66 or the-driver 58 through the intermediary of the pin 69. The

intermediary of an adjustable pulling memadditional inlet valve 12 is controlled by the displaceable pin 22 which is influenced by the spring 28*. The inlet valve, 52 is controlled on the one hand by the spring 55, on the other hand by the driver 58 through the intermediary of the lever 57.. The said driver and also the outlet valve 72 is influenced by the strong spring 63.

The operation of the apparatus described. above is the following:

In the position of rest, shown in Fig. 4:, the main valve 27 is closed and the piston 17 a in connection with the diaphragm 14 is lifted to such an extent that the water pipe 0 leading to the storage tank is in connection j with the discharge nozzle 5 In consequence thereof the water levels on the overflow-rim are equalized, whilst the gasoline correspondingly recedes from the pipe a. The inlet and outlet valve 11 and also the outlet valve 72 is opened WhiIst the inlet valve 52 and the additional inlet valve 12 are closed. The

. weighed lever 66 is in the position shown'in the influence of the spring 63 the outlet valve 7 72 is closed and the inlet valve 52 is opened. In consequence thereof the water forcibly enters into the upper diaphragm-chamber through the water inlet and outlet valve '11 and moves the diaphragm 14 downwardly whereby the pipe 0 is shut off from'the nozzle 6 and the pressure-water valve27- is simultaneously opened. In consequence thereof a quantity of water in correspondence with the V,

throttling conditions at 32 flows from the water duct d into the storage tank and expels the gasoline. V Y I The tapping operation being initiated it is-no.more necessary=to exert a pull onthe cable h, and the lever 66 may drop into its medium position (Fig. 4) without eiiecting an interruption of the tapping operation, as

The tapping operation is finished :by clo'sing the tapping cock and simultanenously a complete release of the pressure in the storage tank and a shutting off of the pressurewater duct takes place,- as 1s illustrated 1n Fig. 4

.for the position of rest, as the temporary increase of the pressure in the storage tank due to the closing of the tappping cock works in the direction of the pressure of the spring 19 and lifts the dia nhra ma 14 whereb the l e y duct 0 15 connected with the nozzle discharge 6? through the intermediarylof the annular duct 16 ,whilst the pressurerwater duct (Z shut oil by means of thevalve 27 Simultanenously the threaded ring above the diaphragma 14 ettects an opening of the inlet 7 and outlet valve 11 through the intermediary of the lever 87 and in consequence thereof isci ar e o b e wa er from tne u Jer diaa d h g f h t phragm-chamber 2 to the water outlet valve 72 and into thedischarge duct 9. In the state of rest a dispense of gasoline 1n the case of breakage or leaking of the gasoline ascending duct is therefore impossible.

The installation according to Fig. 7 corresponds in respect of the total arrangement and also in respect or" the execution and operation of the controlling device substantially with the installation according to Figs. 1 to 8. The modifications relateto'the safeguarding of the installation against fire and are as follows: 7

From the cable'h connecting the handle as with the controlling valve G a second-cable In is branched off which is guided over a roller 9 vThe cable 72/ is connected'with a rod 49 and kept in tension by a spring exerting pressure against a cross-piece'4c2 of-the said rod. The said spring is lodged in an extension 48 of the casing At the tapping spot a collar of the handled?) is thereby in contact with a stop tormedby the guide 44.. In a. certain.

distance below the cross-piece 42 the head'O of a spindle 39 is located going through a stuffing-box 38 and being connected with the V inlet and outlet valve 11 of the controlling apparatus C. 1

The cable h for operating the valve. C is connected with anupper elongation of the spindle as 01" the valve 0 through the inter the several portions of the cables are no more in connection witheach other. so that no pulling forces can be applied to the cables. The fusible safeguarding .means maybe of any suitable known construction.

The operation of theinstallation according 7 to Fig. 7 is the following:

As long as the fusible" means .are in .a solid state the normalloperating is asv follows: f V

In the case ofa tapping first the tapping cock .at B and then the valVeC Iis. opened, the opening of the-latter being executed by applying a pulling force to the handle 43 and the cable It.

elements of the said apparatusinto the=-working positions. By the pulling force exerted on the handle 43 also the cross-piece 4:2 is

lifted against the actionof the spring 41.

After. the initiatingof the expensing opera-- tion it is no more necessaryrfurtner to exert the pulling force on the handle 43 so that under the pressure of'the. spring 41 the-cross.

piece 42 mayreturn into the position which is illustrated in the drawing. The same 00- curswith the valve C under the influence of its own spring.

In the case of aconflagration'the safeguarding'means 47 or somezof them-will smelt. piece 42 is moved by the spring 41. I The said cross-piece imparts motion to the. head 40 of the spindle 39 whereby the valve rll is opened. The discharge of water. from the controlling apparatusC is now effected and the apparatus is automatically released from pressure so that every possibility of expensing gasoline from the tap B is outdone. Simultaneously the entering of pressurewater through the valve C is obviated,- as the saidvalve can no more be opened by pulling on the handle 43. g V

In the installation described above not only the cables provided withfusible'safeguarding 'meansare of importance bi1t:alsouthe .fact

that the controlling means containing the safeguarding means are normal-lyemployed in the installation. so that thewhole plant is permanently watched over for'its*-.regular operation and its reliability in-the. case of danger is warranted. j V

When uslng safe-guarding means which are not also employed for the regular? opera- Thereby pressure-water enters into the controlling apparatus. C to bring. the;

In consequence thereofthecross-:

tion of installationythere is'the dangerr-t-hat such. safeguarding: meansare subjected to a longtime, and that the said safeguarding means do not work in the case of dangeron account of the said alterations. This is especially the case with valves and taps which are nevernioved during the normal operation and which in the case of a confiagration have to work, suddenly and automatically. The valves according to the inventionare permanently in use and will therefore work in the case ofan accident. 7

When using a controlling apparatus'according to the Figs. d to 6 the fusiblesafeguarding means have to be, intercalated in the cable h which. is connected with the wei hed lever 66. lVith the. said means the dispensing is in the case of a conflagration automatically interrupted, as after the smelting of the safeguarding means and yielding of the cable h the weighed lever 66' drops into its lower position according to Fig.

1 6. Thereby the said lever and its roller 65 the valve ll' 'being larger than that of the move the guide 58 downwardly, until the said guide meets the pin 69 and opens the inlet and outlet valve 11 7 The cross-section of the discharge duct of additional inletvalve 12 now opened, the upper diaphragm-chamber 2 will be released from pressure so that the spring 19 maybecome operative to effect shutting ofi of the valve 27 so that the connection of the duct with the discharge nozzle 6 is established.

CPI

communication with the atmosphere.

Through the dropping of the weighed lever 66 the plant is brought to the state of rest and of release of pressurewithout actuating a single member that has not permanently been used in the normal operation.

We claim:

1. In a hydraulic fuel dispensing system, a storage tank fuel dispensing means comprising a tapping valve, pressure-water feed means, a pressure member adapted on. being moved to put said storage tank into communication with said feed means, valve means adapted to cause said pressure member to, be moved into one of its end positions, and hydraulic means to temporarily maintainthe communication established by said pressure member independently from the position, of said valve means. I

2. In a hydraulic fuel dispensing system, a storage tank, fuel dispensing means comprising a tapping valve, pressure-water feed means, a pressure member adapted on being I moved to put said storage tank into communication with said feed means, valve means adapted tocause said pressure member to be moved into one of 1ts end positions, hydraulic means to temporarily malntam the communi cation established by said pressure member independently from said valve means, and

means to automatically interrupt saidvoom- I munication and to put said storage tank into 3. Ina hydraulic fuel dispensing system, a storage tank, a fuel dispensing pipe having a tapping valve, a pressure chamber, a pressure-water feed plpe, a pressure water sup ply pipe adapted to establish communication between saidchamber and saidtank, a discharge passage adapted to establish communication between said chamber and the atmosphere, a pressure member adapted to be moved within said chamber, means to arbitrarily putone side of said pressure member intocommunicat-ion with said feed pipe soas to cause said. pressure member to be moved in an end position to establlsh communication between said feed pipe and said supply pipe and to interrupt communication between said sure-water feed pipe, a pressure water supply pipeadapted to establish communication between'said chamber and said tank, a discharge'passage adapted to establish communication between said chamber and the at- 'mosphere, a pressure member adapted to be moved within saidchamber, means to arbi- 'trarily put one sideof said pressure member into communicationwith said feed pipe so as to cause said pressure member to be moved in an end positionto establish communication between said feedpipe andsaid supply pipe and to interrupt communication between said dlscharge passage and said chamber,

throttle means between said feed pipe and the other side of said pressure member, and additional meansto automatically put said one side'ofthe pressure member into communication with said feed pipe, said pressure member being under the joint control of said throttle means and said additional means.

5. In a hydraulic fuel dispensing system, a storage tank, a fuel dispensing pipe having a tapping valve, a pressurechamber, a'pres sure-water feed pipe, a pressure water supply pipe adapted to establish communication between said chamber and said tank, av discharge passage adapted to establish communication between said chamber and the atmosphere, a pressure memberfiadapted to be moved within said chamber, means to arbitrarily put one side of said pressure member into communication with said feed pipe so as to cause said pressure member to be moved in an end position to establish communication between said feed pipe and said supply-pipe and to interrupt communication between said discharge passage and said chamber, adjustable throttlemeans between said feed pipe and the other side of said pressure member,

. an a d io al 31 31 1 au omatically Put my to :said tank, an outlet conduit leading, into said one side: of} the" pressure memberv into communication with said feed pipe onssaid V tapping valve being closed.

' 6. In a hydraulic fueludispensing system, a storage tank, a fuel dispensingpipe having a-tapping valve, aavalve chamber, a spring actuated pressure member shiftable -within saidzvalve chamber and subdividing it into two compartments, apressure water" supply piper leading from one of sa d compartments the atmosphere and adapted to beput into communication with said one compartment by s'aidpressure member, a third compartment; a, passage between saidthird compartment=and said onecompartment, a main valve controlling said passage and adapted ftO' be closed' b'y saicl pressure member, a pressure waterfeed conduit "leading 1 into said third compartment,"a'pressure water inlet pipe leading from said feed pipe'into the other one ofsaid twocompartments, an inletvalve controlli'ngsaid inlet pipe and adapted tobe opened by said pressure member, a controlling 'valve adapted in one of its positions to establish 7 communication" between said inlet valve and =said inlet-pipe' and in another positiontoestablish communication between said inlet valve and 'the atmosphere, an addition a1inletpipe-leadingirom said: feed pipe into said}other-compartment, and an additional inlet 'valve-controlling said additional inlet,v

pipe and adapted to be closed by said pressure member on the first named inlet pipe being opened b'y itL 1 i f *7 Ina hydraulic fuel dispensing system, a storage--tanlr,1a"fuel dispensing pipe-having a tappingvalvaza valve chamber, a spring. ac-

'tuatedfpressuremember shiftable within said valve chamber and subdividing it intotwo by said pressure member, a pressure-water feedconduit. having a part of restricted pas sage area and leadinginto said third compartment, a pressure-Water inlet pipe leadingfroin said feed pipe into the other one of said" two compartments, an inlet valve controlling said inlet pipe'and adapted to be 7 opened by said pressure member, a controllingvalve, adapted-in one of itspositions to establish communication between said inlet valve and said inlet pipe and in another posis ti'on to, establish communication between said inlet valve and'the atmosphere, a drawing member to operate said controlling valve froma place near said tapping valve, an additional inlet pipe leading from said feed pipe pri'sing' a t'apping valve, means, a controll ng'device adapted'on being mamas-i into said other compartment; and 'anadditional inlet valve controllingsaid additional inlet pipe and adapted to be closed bysaid pressure member on the first named inlet-pipe being opened by it. 7

8. In a hydraulic fuel dispensing system, a

storage tank, a fuel dispensing pipe having a tapping valve, a valve chamber, a spring actuated pressure member shi'ftable within said valve chamber and subdividingit into two compartments, a pressurewater supply pipe leading from one of said compartments to said tank; an outlet conduit leading into theatmosphere and adaptedto be putinto communication with said one compartment by said pressure member, a third compartment, a passage between said third-Compartment and said one compartment, a main valvccontrolling said passage and adapted tobe closed bysaidpressure member, a pressure-water feed conduit having a partof restricted passage area and leading into said thIIdOOIIl partment, means to vary the area of said restricted part, a pressure water-inlet pipe leading from said feed pipe into the other one of said two compartments, an inlet valve controlling said inlet pipeand'a'dapted to be opened by said pressure member, a controlling valve adapted in one ofits positions to establish communication between said inlet valve and said inletpipe and in another'position to establish communication between saidinlet' valve and. the atmosphere, flexible means to operate said'controlling valve'from a remote place near saidtapping valve, an

additional inletpipe leadinglfrom'said feed I pipe into said other compartment, and an ad-' ditional inlet valve controlling said additional inlet pipe and adapted to be'closedby said pressu rem'ember onthel first named inlet pipe being opened by it.

' 91? In a hydraulic fuel a storage tank, fuel'fdispensmg means icomsta-rterhtdput said storage. tankinto commue nica'tion'with'saidfeed means, means to start dispensing system,

pressure-water 'feedf said"controllingfdevice,means to operate said startingmeans fro naplace near said tapping valve, means mechanically independent from said starting meanstomaintain saidcontrol ling-device in it's-communication state, and

means'responsive-to temperature rising to automatically interrupt the communication establi'shed by said controlling device and to put said storage" tank into g communication with tlieatmosphere? T0. In ashydraulicfuel dispen'singsystem, a storage tank, fueldispensing means comprising a tapping valve, pressu-re-water'feed means, a controlling device adapted on being started toput said storage tank into communication with. saidfeedrmeans, means to'start said controlling; device, means to operate said startin'gmeansfrom a place near said tapping valve, means mechanically independent from said starting means to main tain said controlling device in its communication state, and fusible means inserted in said operating means and adapted on being released to cause the communication established by said controlling device to. be interrupted and said storage tank to be put into communication with the atmosphere.

11. In a hydraulic fuel dispensing system, a storage tank, fuel dispensing means comprising a tapping valve, pressure-water feed means, a controlling device adapted on being started to put said storage tank into communicatlon with sa1d feed means, means to start said controlling device, a flexible member to operate said starting means from "a remote place, means mechanically independent from said starting means to maintain said controlling device lllltS communicatlon state, and

fusible safeguarding members inserted in said flexible members and adapted on'being put into operation to cause automatically shutting off said feed means.

12. In a hydraulic fuel dispensing system, a storage tank,fuel dispensing means comprising a tapping valve, a pressure-water feed pipe, a pressure-water supply pipe leading into said tank, an outlet passage, a main valve adapted to controlthe flow of pressure-water from said feedpipe into said tank, a pressure member adapted to actuatesaid main valve so as to shut oft said feed pipe and put said outlet passage into communication with the at-v mosphere in its one position and to give passage from said feed pipe into said tank and to shut ofi the connection between the tank and said outlet passage in another position, controlling means adapted to cause said pres sure member toflmove in its diiierent positions, said'contrjolling means comprising an inlet valve, means to operate said inlet valve,

and fusible safeguarding means inserted in said operating means and adapted on being; fused to cause saidpassage from the feed plpe into the tank to be interrupted.

13. In a hydraulic fuel dispensing system,

a storage tank, fuel dispensing means comprising a tapping valve, a pressure-Water feed pipe, a pressure-water supply pipe leading into sald tank, an outlet passage, a mam valve adapted to control the flow of pressurewater from said feed pipeinto said tank, a pressure member adapted to actuate said main valve so as to shut off said feed pipe and-put said outlet passage into communication with the atmosphere in its one position and to give passage from said feed pipe into said tank and to shut off the connection between the tank and said outlet passagein another position, controlling means adapted to cause said pressure member to move in its difierent positrons, said controlling means compr sing a normally closedinlet valve, and means responsive to unusual temperatures and adapt-V ed when released to automatically open saidv inlet valve and thereby to cause the communication from said feed pipe to said tank to be interrupted.

14. In a hydraulic fuel dispensingsystem, a storagetank, fuel dispensing means comprising a tapping valve, a pressure-water feed pipe, a pressure, water supply pipe leading into said tank, an outlet passage, a

main valve adapted to control the flow of pressure-water from said feed pipe into said tank,a pressure member adapted to. actuate said main valve so as to shut off said feed pipe and put said outlet passage into communication in its one position and to. give passage from said feed pipe into said tank. and to shut off the connection'between the tank and said outlet passage in another 'position, controlling means adapted to:cause said pressure member to move in its different ositions said controllin means com ris- 7 7 ing an inlet valve normally closed, means re-' sponsive to abnormal temperatures and adapted when released to automatically open said inlet valve and thereby to cause the communication from said feed pipe to said tank to be interrupted, a controlling valve'adapted in one of .its positions to establish communication between said inlet valve and said lnlet pipe and Inxanother position to establish communication between said" inlet valve and the atmosphere, a drawing member. to operate said controlling valve from a place near said tapping valve, and fusible means inserted in said drawing member and adapted on being released to cause the communication established by said controlling device to be interrupted and said storage tank to be put into communication with the atmosphere. a V

15. In a hydraulic fuel dispensing system, a storage tank, a pressure-water supply, a fuel dispensing pipe comprising a tapping valve, movable controlling means adapted when moved intoone position to put said tank into communication with said pressurewater supply and to interrupt said communication and to put said tank into communication with the atmosphere when'moved into another position, starting means adapted 17 In a hydraulic fuel dispensing system,

a storage tank, a pressure-water supply, a fuel'dispensing pipe comprising a tapping valve, movable controlling means adapted dQWhGIIIHOVGCl into one position to put said tank into communication with said pressure-water supply-and to interrupt said communication and topu't'said' tank into communication with the atmosphere when moved Cll'lt0 another position, hydraulic 'means to move said controlling-means into said first named position, a normally closed inlet valve coiitrolling'said hydraulic means, a control- I lingvalveadapted in one of its positions to. oiiestablish communication between said inlet valve and said pressure water supply and in another position to. establish communication between saidinlet valve and the atmosphere, a drawing member adapted to 3 operate said controlling valve, fusiblemeans inserted in said drawing member and adapted on melting said drawing member to release,'no rmally locked means to automatically open said inlet valve, and means to re- ,;lea'sesaid. opening means in the case of a confiagrati-on.

18. In a hydraulic fuel dispensing system,

a storage tank, apressure-water supply, a

fuel dispensing pipe comprising a 'tapping 4 .xvalve, IDOVablGCOIItI'OlIlDg: means adapted when moved into one position to put said tank-into communication with said pressurewatersupply and to interrupt said communication and to put said tank into communication with the atmosphere when moved into another position, hydraulic means to move said controlling means into said first named I position, a normally closed inlet-valve controlling said hydraulic means, a controlling valve adapted in one of its positions to establish communication between said inlet valve and said pressure water supply andin another position to establish communication between said inlet valve aiidthe atmosphere, a drawing member adapted to operate said controlling valve, fusible means inserted in said drawing member and 'adapted'on inelting said drawingmember to release, 11 rmally locked means to automatically open said inlet valve, means to release said opening means in tlie'case' of a conflagration, said releasing means comprising a drawiiigimember operatively connected to said operatingmeans, and

fusible means inserted in saiddrawingmember. I 1

19. In a hydraulically operatedfuel tapping plant the combination with a storage tank, of a fuel dispensing pipe, 2. tapping valve, a pressure-water feed pipe, a pressurewater supply pipe leading into said tank, a

cont-rolling device insertedbetween said feed;

pipe and said supply pipe and adapted on being started to communicate said feed. pipe with said supply pipe, manually movable mechanical means to start said controlling device and means to automatically maintain said controlling'device in its communicating p0- sition'aslong as said tapping valve is lll'ltS open position. i

20. In a hydraulic prising atapping valve, pressure water feed means, a valve mechanism for controlling the communication between said pressure water feed means and said storage tank, means to start said valve mechanism and hydraulic means to maintain said valve mechanism in its communication staterindependently from said starting means. I

21. In a hydraulic fuel d spensing system, a storage tank, fuel dispensing means comprising a-tapping valve, pressure water feed.

means, a valve mechanism for controlling the communication between said pressure water feed means and said storage tank, means to start said valve mechanism, said starting.

means being adapted to be operated from a place near said tappingvvalve but'independently therefrom, and hydraulic means to maintain said valve mechanism in 1lJS=CO11'1- munication state independently from saidstarting means. I

2:2. In a hydraulic fuel dispensing system, a storage tank, fuel dispensing means comprising a tapping valve, pressure water feed means, a valve mechanism for controlling the communication between said pressure water feed means and .said storage tank, means to start said'valve mechanism, andhydi'auli'c means to automatically maintain'the communication established by said valve mechanism as long as said tapping valve is opened.

23. In a hydraulic fuel dispensing system, a'storage tank, fuel'dispensing means com prising a tapping valve, pressure water feed means, a valve mechanism adapted on being started to put said storage tank into communication with said feed means, meansto start said valve mechanism, hydraulic means to maintain saidvalve mechanism in itscommunication state independently from said starting means, and means to automatically interrupt'the communication established and to put said storage tank into communication with the atmosphere, said means being'other fuel dispensing system, astorage tank, fuel dispensing means comthan and independent from said starting means. V

24;. In a hydraulic fuel dispensing system,

a storage tank, fuel dispensing means com prising a tapping valve, pressure water feed means, a valve mechanism adapted on being started to put said storage tank into communication with said feed means, means to start said valve mechanism, hydraulic means to automatically maintain the communication established by said valve mechanism as'long as said tapping valve is opened, and means associated with said valve mechanism to automatically interrupt said communication upon closing of said tapping valve.

25. In a hydraulically operate-d fuel tapping plant the combination witha storage tank, a fuel dispensing pipe, a tapping valve, a pressure water feed pipe, a pressure water supply pipe leading into said tank, a valve "mechanism inserted betweensaid feed pipe feed means and said storage tank, means to efiect shifting of said valve mechanism into 7 communicating position by said pressure 2 water, and means to maintain said valve mechanism in communicating position under the control'of water within said system having reduced pressure with respect to the pressure effecting shifting of said valve mechanism into communicating position.

27. In a fuel dispensing plant, a storage tank having fuel dispensing means associated thereto, a pressure water feed system for said fuel, a valve mechanism for controlling the communication between said pressure water feed system and saidstorage tank, said valve mechanism having means associated thereto to cause a reduced pressure of the flowing water within a predetermined section of said pressurewater feed system,said reduced pressure and the normal pressureinanother predetermined section of-said valve mechanism holding said mechanism automatically in feeding position after feeding action has been initiated.

28. In a fuel dispensing system, a storage tank, fuel dispensing meanshaving a tapping valve associated thereto, pressure water feed. -means for said fuel, a device for controlling the action of said feed means upon said fuel, means coacting. with said controlling-device for initiating feed'action, means to maintain said controlling device "after initiation in feeding position, and meansto automatically interrupt the communication established by said controlling device said means being responsive to an increase of pressure within one and the same section of said pressure water feed system when fueldispensing is being stopped. 1

29. In a hydraulic fuel'dispensing. system,

storage tank, fuel dispensing meanshaving atapping valve associated thereto, pressure water feed means for said fuel, a device for controlling pressure of said Water upon the fuel, manually movable means coa'cting with said device to initiate pressure upon said fuelfor dispensing the same, meansyto maintain said. controlling device after initiation in feeding position to maintain pressure upon the fuel. and means associated with said controlling device to automatically interrupt feeding action when said tapping valve is being closed .said'means being controlled by the change of pressure within said pressure Water feedsystem causedby the closureof said tapping valve. t V

30. In a fuel. dispensing system, a storage tank having fuel dispensing means associated thereto, pressure water feed means for said fuel, a device for controlling the action "of said pressure water upon said fuel, means to start said controlling device for feedingacthe stop Qf'tlIG flOW of pressure water caused hyclosing of said fuel dispensing means.

astorage tank, fuel dispensing means including a tapping valve, pressure water feed means for said fuel, a device for controlling pressureof said water upon the fuel, yieldingly mounted manual means coacting'with said device to momentarily initiate pressure 'tion, means to automatically maintain said device in feeding position, and means to auto 'matically disable said maintaining means by 31. In a hydraulic fuel dispensing' system,

upon said fuel for dispensing the same, and

automatically in active position after said momentary actuation of said manual means.- 32. In a hydraulic fuel dispensing system,

associatedthereto, said means including a tapping valve, pressure water feed means,

a device for controlling the action of said pressure, water feed means upon the fuel within said tank,jmeans coacting with said device to momentarily initiate pressure upon said fuel for dispensing thesame, and a mechanism to r'estore said means after initiation,

and means tolmaintainsaid controlling device means to maintain said controlling device a storage tank having fuel dispensing means after initiation in active position to maintain pressure upon the fuel.

33. In a hydraulic fuel dispensingsystem,

a storage tank having fuel dispensing means associated thereto, said means including a Y tapping 'valvej,1pressure' water feed means, a

device for controlling the action of said pressure water feed'means upon the fuel within associated thereto, pressure water feed means, 7

a device forcontrolling the communication between sa1d storage tank and sa1d pressure water feed means, means independent frorn' said fuel dispensing means formomentarily establishing said communication through said controlling device, means to maintain said communication while said communication establishing means are in home position, and means associated with saidcontrolling device said means being responsive to the flow of pressure water to automatically interrupt said communication when said fuel dispensing means are 7 being closed;

35. In ahydraulicfuel dispensing system,

a storage tank, fuel dispensingmeans comprising a tapping valve, pressure water feed means, a valve mechanism for controlling the communication between said pressure water, feed 'means and said storage tank, means for starting said valve. mechanism, means for operating said starting means, hydraulic Imeans for maintaining said valve mechanism in its state of communication independently from said starting means and means responsive to an increase of temperature, said meansbeing associated with said operating means, for automatically interrupting the. communication established by said valve mechanism and for effecting communication betweensaid storage tank and the atmosphere. 3 i- 36. In a hydraulic fuel dispensing system, a storage tank, fuel dispensing means comprising a tapping valve,pressure water feed means, a valve mechanism for controlling the communication between said pressure water feed means and said storage tank, means for starting said valve mechanism, means for operating said starting means, hydraulic means for maintaining-said valve mechanism in its state of communication independently from said starting means, a flexible member adaptedtooperate said starting means, and fusible safeguarding means insertedinto said flexible member for automatically interrupting the communication established" by said valve mechanism and for putting'said storage tank into communication with-the atmosphere. I 37. In ahydraulic fuel dispensing system, a storage tank, fuel dispensing meansicom prising a tapping, valve, pressure water feed means,-a valve mechanism for controlling the communication between said pressure water feed means and said storage tank, means for starting said valve mechanism, said starting .means being adapted to be operated from a place near said tapping valvebut independently therefrom, hydraulic means for maintaining said valve mechanism in its state of communication independently from said starting means, and fusible means inserted into said starting means and, adapted on be- .7

ing released due to unusual temperature to cause the interruption of the communicatlon wh1ch hadbeen established by sa1d controling valve mechanism.

38. In a hydraulic fueldispensing system a storage tank, fuel dispensing means comprising a tappingvalve, pressure water feed means, a valve mechanism adapted to put said storage tank 1nto' communication wlth sa1d feed means, means for starting said valve mechanism, hydraulic means for automatically maintaining the communication established bysaid valve mechanism as long as said tapping valve is opened, means associated with said valve mechanism for automatically engaging said valve 'mechanism automatically to interrupt said communication upon closing of said tapping valve, and safeguarding means responsiveto an lncrease of temperature, such means being lnserted intc said starting means for automatically intermaintaining said controlling device in active position after said momentary actuation of said manually operable means, and fusible safeguarding means inserted into sa1d yleldingly mountedand manually operable means so as to disable them on being fused.

40. In a hydraulic fuel dispensing system, a storage tank having fuel dispensing means associated thereto, a tapping valve, pressure water feed means, a device for controlling the communication between said storage tank and said feed means, means for starting said controlling device, a flexible member for operatlng sa1d starting means from a re- .mote place, means for maintaining said controlling device in its stateof communication, said maintaining meansbeing mechanically independent from said starting means, and fusible safeguarding members inserted into said flexible member and adapted on being released under unusual temperature automatically to cause shutting 01f of Said feed means.

ll. In a hydraulic fuel dispensing system, 7 a storage tank, fuel dispensing means comprising a tapping valve, a pressure water feed pipe, a pressure water supply pipe, an outlet passage, 21 main valve adapted tocontrol the flow of pressure water from said feed pipe into said tank, a pressure member adapted to actuate said main valve, controlling means adapted to cause said pressure member to move into its different positions, said controlling means comprising an inlet valve. normally closed, means responsive to unusual temperature and adapted, when released, automatically to open said inlet valve and thereby to cause the interruption of the communication between said feed pipe and said tank, a controlling valve adapted to establish in one of its positions communication between said inlet valve and said inlet pipe and in another of its positions communication between said inlet valve and the atmosphere, a drawing member for operating said controlling valve from a place near said tapping valve, and fusible means being inserted into said drawing member and, when released, adapted to cause the interruption of the communication established by said controlling device and the communication ofsaid storage tank with the atmosphere.

42. In a hydraulic fuel dispensing system,

position, to interrupt said communication and to put said tank into communication with the atmosphere, means for manually operating said controlling means, hydraulic means for moving saidcontrolling means into said first named position, a normally closed'inlet' valve controlling said hydraulic means, a controlling valve adapted in one of its positions to establish communication between said inlet valve and said pressure water supply and in another of its positions to establish communication between saidinlet' valve and the atmosphere, a drawing member adapted to operate said controllingvalve, fusible means being inserted into saiddrawing member and, when melting, adapted to release said drawing member, normally locked means for automatically openingsaid inlet valve, means for releasing said normally locked opening means in the case of a conflagration, said releasing means comprising a tensile member operatively connected with said operating drawing member, and fusible means inserted into said tensile member.

In testimonywhereof .we aflix our signatures;

ERNST HURLBRINK.

. MAX LUDWIG.

a storage tank, a pressure water supply, a fuel dispensing pipe comprising a tapplng valve, movable controlling means adapted, when moved into one position, to put said tank into communication with said pressure water supply and, when moved into anotherposition, to interrupt said communication and to put said tank into communication with the atmosphere, hydraulic means to move, said controlling means into said first named position, a normally closed inlet valve controlling said hydraulic means, a controlling valve adapted in one of its positions to establish communication between said inlet valve and said pressure water supply and in another of its positions to establish communication between said inlet valve and the atmosphere, a drawing member adapted to operate said controlling valve, fusible means inserted into said drawing member and adapted, when r melting, to release said drawing member, normally locked 'means for automatically opening said inlet valve, and in association with said normally locked means fusible means for releasing the normally locked means in the case of a conflagration.

43. In a hydraulic fuel dispensing system, a storage tank, a pressure water supply, a fuel dispensing pipe comprising a tapping valve, movable controlling means adapted, when moved into one-position, to put said tank into communication with said pressure water supply, and when moved into another ice 7 

